/*!

\if MANPAGES
\page dump2dcm Convert ASCII dump to DICOM file
\else
\page dump2dcm dump2dcm: Convert ASCII dump to DICOM file
\endif

\section dump2dcm_synopsis SYNOPSIS

\verbatim
dump2dcm [options] dumpfile-in dcmfile-out
\endverbatim

\section dump2dcm_description DESCRIPTION

The \b dump2dcm utility converts an ASCII dump file to a DICOM file.  The
dump file has the same format as the output of \b dcmdump.  Thus it is possible
to capture the output of \b dcmdump into a file, modify some attributes and
create a new DICOM file.

\section dump2dcm_parameters PARAMETERS

\verbatim
dumpfile-in  dump input filename

dcmfile-out  DICOM output filename ("-" for stdout)
\endverbatim

\section dump2dcm_options OPTIONS

\subsection dump2dcm_general_options general options
\verbatim
  -h   --help
         print this help text and exit

       --version
         print version information and exit

       --arguments
         print expanded command line arguments

  -q   --quiet
         quiet mode, print no warnings and errors

  -v   --verbose
         verbose mode, print processing details

  -d   --debug
         debug mode, print debug information

  -ll  --log-level  [l]evel: string constant
         (fatal, error, warn, info, debug, trace)
         use level l for the logger

  -lc  --log-config  [f]ilename: string
         use config file f for the logger
\endverbatim

\subsection dump2dcm_input_options input options
\verbatim
input file format:

  +f   --read-meta-info
         read meta information if present (default)

  -f   --ignore-meta-info
         ignore file meta information

file contents byte ordering:

  +rl  --read-file-little
         read OW data with little endian (default)

  +rb  --read-file-big
         read OW data from file with big endian

other input options:

  +l   --line  [m]ax-length: integer
         maximum line length m (default: 4096)
\endverbatim

\subsection dump2dcm_processing_options processing options
\verbatim
unique identifiers:

  +Ug  --generate-new-uids
         generate new Study/Series/SOP Instance UID

  -Uo  --dont-overwrite-uids
         do not overwrite existing UIDs (default)

  +Uo  --overwrite-uids
         overwrite existing UIDs
\endverbatim

\subsection dump2dcm_output_options output options
\verbatim
output file format:

  +F   --write-file
         write file format (default)

  -F   --write-dataset
         write data set without file meta information

  +Fu  --update-meta-info
         update particular file meta information

output transfer syntax:

  +t=  --write-xfer-same
         write with same TS as input (default)

  +te  --write-xfer-little
         write with explicit VR little endian

  +tb  --write-xfer-big
         write with explicit VR big endian TS

  +ti  --write-xfer-implicit
         write with implicit VR little endian TS

  +td  --write-xfer-deflated
         write with deflated explicit VR little endian TS

error handling:

  -E   --stop-on-error
         do not write if dump is damaged (default)

  +E   --ignore-errors
         attempt to write even if dump is damaged

post-1993 value representations:

  +u   --enable-new-vr
         enable support for new VRs (UN/UT) (default)

  -u   --disable-new-vr
         disable support for new VRs, convert to OB

group length encoding:

  +g=  --group-length-recalc
         recalculate group lengths if present (default)

  +g   --group-length-create
         always write with group length elements

  -g   --group-length-remove
         always write without group length elements

length encoding in sequences and items:

  +e   --length-explicit
         write with explicit lengths (default)

  -e   --length-undefined
         write with undefined lengths

data set trailing padding (not with --write-dataset):

  -p=  --padding-retain
         do not change padding (default if not --write-dataset)

  -p   --padding-off
         no padding (implicit if --write-dataset)

  +p   --padding-create  [f]ile-pad [i]tem-pad: integer
         align file on multiple of f bytes
         and items on multiple of i bytes

deflate compression level (only with --write-xfer-deflated):

  +cl  --compression-level  [l]evel: integer (default: 6)
         0=uncompressed, 1=fastest, 9=best compression
\endverbatim

\section dump2dcm_notes NOTES

\subsection dump2dcm_notes_description Dump File Description

The input file can be an output of \b dcmdump (default indented format only).
One element (tag, VR, value) must be written into one line separated by
arbitrary spaces or tab characters.  A '#' begins a comment that ends at the
line end.  Empty lines are allowed.

The individual parts of a line have the following syntax:

\verbatim
Tag:   (gggg,eeee)
       with gggg and eeee are 4 character hexadecimal values
       representing group and element tag.  Spaces and tabs can be
       anywhere in a tag specification.
VR:    Value Representation must be written as 2 characters as in
       Part 6 of the DICOM standard.  No spaces or tabs are allowed
       between the two characters.  If the VR can be determined from
       the tag, this part of a line is optional.
Value: There are several rules for writing values:
       1. US, SS, UL, SL, UV, SV, FD, FL, OD, OF, OL and OV are written
          as decimal strings that can be read by scanf().
       2. AT is written as '(gggg,eeee)' with additional spaces
          stripped off automatically and gggg and eeee being decimal
          strings that can be read by scanf().
       3. OB and OW values are written as byte or word hexadecimal
          values separated by '\' character.  Alternatively, OB or OW
          values can be read from a separate file by writing the
          filename prefixed by a '=' character (e.g. '=largepix.dat').
          The contents of the file will be read as is.  By default, OW
          data is expected to be little endian ordered and will be
          swapped if necessary.  No checks will be made to ensure that
          the amount of data is reasonable in terms of other attributes
          such as Rows or Columns.
          In case of compressed pixel data, the line should start with
          '(7fe0,0010) OB (PixelSequence' in order to distinguish from
          uncompressed pixel data.
       4. UI is written as '=Name' in data dictionary or as unique
          identifier string (see 6.), e.g. '[1.2.840.....]'.
       5. Strings without () <> [] spaces, tabs and # can be written
          directly.
       6. Other strings must be surrounded by '[' and ']'.  No bracket
          structure is passed.  The value ends at the last ']' in the
          line.  Anything after the ']' is interpreted as comment.
       7. '(' and '<' are interpreted special and may not be used when
          writing an input file by hand as beginning characters of a
          string.  Multiple Value are separated by '\'.  The lines
          need not be sorted into ascending tag order.  References in
          DICOM Directories are not supported.  Semantic errors are
          not detected.
\endverbatim

\subsection dump2dcm_notes_examples Examples

The following lines show valid examples of the syntax described above:

\verbatim
 (0008,0020) DA [19921012]            #  8, 1 StudyDate
 (0008,0016) UI =MRImageStorage       # 26, 1 SOPClassUID
 (0002,0012) UI [1.2.276.0.7230010.100.1.1]
 (0020,0032) DS [0.0\0.0]             #  8, 2 ImagePositionPatient
 (0028,0009) AT (3004,000c)           #  4, 1 FrameIncrementPointer
 (0028,0010) US 256                   #  4, 1 Rows
 (0002,0001) OB 01\00
\endverbatim

\subsection dump2dcm_limitations Limitations

Please note that \b dump2dcm currently does not fully support DICOMDIR files.
Specifically, the value of the various offset data elements is not updated
automatically by this tool.

\section dump2dcm_logging LOGGING

The level of logging output of the various command line tools and underlying
libraries can be specified by the user.  By default, only errors and warnings
are written to the standard error stream.  Using option \e --verbose also
informational messages like processing details are reported.  Option
\e --debug can be used to get more details on the internal activity, e.g. for
debugging purposes.  Other logging levels can be selected using option
\e --log-level.  In \e --quiet mode only fatal errors are reported.  In such
very severe error events, the application will usually terminate.  For more
details on the different logging levels, see documentation of module "oflog".

In case the logging output should be written to file (optionally with logfile
rotation), to syslog (Unix) or the event log (Windows) option \e --log-config
can be used.  This configuration file also allows for directing only certain
messages to a particular output stream and for filtering certain messages
based on the module or application where they are generated.  An example
configuration file is provided in <em>\<etcdir\>/logger.cfg</em>.

\section dump2dcm_command_line COMMAND LINE

All command line tools use the following notation for parameters: square
brackets enclose optional values (0-1), three trailing dots indicate that
multiple values are allowed (1-n), a combination of both means 0 to n values.

Command line options are distinguished from parameters by a leading '+' or '-'
sign, respectively.  Usually, order and position of command line options are
arbitrary (i.e. they can appear anywhere).  However, if options are mutually
exclusive the rightmost appearance is used.  This behavior conforms to the
standard evaluation rules of common Unix shells.

In addition, one or more command files can be specified using an '@' sign as a
prefix to the filename (e.g. <em>\@command.txt</em>).  Such a command argument
is replaced by the content of the corresponding text file (multiple
whitespaces are treated as a single separator unless they appear between two
quotation marks) prior to any further evaluation.  Please note that a command
file cannot contain another command file.  This simple but effective approach
allows one to summarize common combinations of options/parameters and avoids
longish and confusing command lines (an example is provided in file
<em>\<datadir\>/dumppat.txt</em>).

\section dump2dcm_environment ENVIRONMENT

The \b dump2dcm utility will attempt to load DICOM data dictionaries specified
in the \e DCMDICTPATH environment variable.  By default, i.e. if the
\e DCMDICTPATH environment variable is not set, the file
<em>\<datadir\>/dicom.dic</em> will be loaded unless the dictionary is built
into the application (default for Windows).

The default behavior should be preferred and the \e DCMDICTPATH environment
variable only used when alternative data dictionaries are required.  The
\e DCMDICTPATH environment variable has the same format as the Unix shell
\e PATH variable in that a colon (":") separates entries.  On Windows systems,
a semicolon (";") is used as a separator.  The data dictionary code will
attempt to load each file specified in the \e DCMDICTPATH environment variable.
It is an error if no data dictionary can be loaded.

\section dump2dcm_see_also SEE ALSO

<b>dcmdump</b>(1)

\section dump2dcm_copyright COPYRIGHT

Copyright (C) 1996-2023 by OFFIS e.V., Escherweg 2, 26121 Oldenburg, Germany.

*/
